EEVblog #430 - Fluke 91 Scopemeter Teardown

[MostlyHarmless]

it wont let me upload schematic pictures.. too big

I have a fluke 93 50 MHz scopemeter which does not power up, i am trying to find the correct version of the manual as my unit has an A1 Digital board with the six LCD driver chips as in your picture and not the 5 chip board as seen in the only versions of the service manual i've found online so far.

i need the correct version to allow me to troubleshoot the On/Off circuit, i have high hopes as when probing with my oscilloscope i must have pulled something low that turned the unit on (just once and i cant replicate whatever i did

Does anyone have the full service manual and the layout diagrams for the fluke 93 with a1 board with the 6 LCD driver chips

[dobsonr741]

Puzzled... Where is 50MHz AFE bandwidth? LF453 only goes 4MHz.